1Centre for Addiction and Mental Health, Toronto, Ontario, Canada M5V 2B4, Institute for Clinical Evaluative Sciences, Toronto, ON, Canada M4N3M5
2Institute for Clinical Evaluative Sciences, Toronto, ON, Canada M4N3M5
E-mail addresses:[email protected]
☆This study was supported by the Institute for Clinical Evaluative Sciences (ICES), which is funded by an annual grant from the Ontario Ministry of Health and Long-Term Care (MOHLTC), as well as by annual funding from MOHLTC to the Centre for Addiction and Mental Health. The opinions, results and conclusions reported in this paper are those of the authors and are independent from the funding sources. No endorsement by ICES or the Ontario MOHLTC is intended or should be inferred.
received December 15, 2010
accepted December 18, 2010
